Thanks guys- appreciate the feedback, took them both out for a spin again on Tuesday night and in the end I went with the Charge Plug Racer over the Paddy Wagon and the Plug Freestyle which I'd ridden earlier. I threw another one in there for comparison as well, the Bianchi Pista, but the Plug Racer felt slightly more comfortable although the BIanci really did look the business. I think eventually I would like to change the gearing to be similar to the Bianci (46T up front), but i'll give it some time before that one...
The one thing I did notice however were the size of the tyres on the Plug Racer which were a bit big for my liking. I'm not sure if those tyres will stay...any recommendations for something skinnier that would suit?